Pad Refills (Pack of 6 Pads) - 11 1/2" x 23 1/2" x 1" Quantity:Default The filtering media consists of

The filtering media consists of two layers of Stainless Steel roll formed baffles

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

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the more efficient a filter is at removing particles

Pad Refills (Pack of 6 Pads) - 11 1/2" x 23 1/2" x 1" Quantity:Default The filtering media consists ofPACK of 6 pads for Pad and Frame Air Filters Filtering inserts are anti microbial and are more efficient in capturing particles, such as dust, ragweed, pollen, etc., from the air stream, than standard fiberglass filters purchased at retail outlets. Filtering inserts are shipped in an easily stored packet.